CF8 Enterprise gives 500 errors

I installed CF8 Enterprise for Linux about two months ago and it appeared to work fine until I rebooted the machine. Since then the server throws " 500 Can't find resource for base name coldfusion/server/ServiceFactory.ServiceNotAvailableException.properties" errors for *any* request. I had not yet loaded any thing except the server itself in and setup one user account and some sandboxes. During jrun start up I get the following in the /var/log/coldfusion log:

Starting Macromedia JRun 4.0 (Build 108487), cfusion server
01/07 13:44:56 info JRun Naming Service listening on *:2902
01/07 13:44:56 info No JDBC data sources have been configured for this server (see jrun-resources.xml)
01/07 13:44:56 info JRun Web Server listening on *:8300
01/07 13:44:56 info JRun Proxy Server listening on *:51020
01/07 13:44:56 info Deploying enterprise application "JRun 4.0 Internal J2EE Components" from: file:/opt/jrun4/lib/jrun-comp.ear
01/07 13:44:56 info Deploying EJB "JRunSQLInvoker" from: file:/opt/jrun4/lib/jrun-comp.ear
Server cfusion ready (startup time: 1 seconds)
01/07 13:44:56 info Deploying enterprise application "cfusion-ear" from: file:/opt/jrun4/servers/cfusion/cfusion-ear/
01/07 13:44:56 info Deploying web application "Adobe ColdFusion 8" from: file:/opt/jrun4/servers/cfusion/cfusion-ear/
01/07 13:44:56 INFO License Service: Flex 1.5 CF Edition enabled
01/07 13:44:56 INFO Starting Flex 1.5 CF Edition
01/07 13:44:56 user JSPServlet: init
01/07 13:44:57 user ColdFusionStartUpServlet: init
01/07 13:44:57 user ColdFusionStartUpServlet: ColdFusion: Starting application services
01/07 13:44:57 user ColdFusionStartUpServlet: ColdFusion: VM version = 1.6.0_01-b06
01/07 13:44:57 Information [scheduler-10] - Starting logging...
01/07 13:44:57 Information [scheduler-10] - Starting license...
01/07 13:44:58 Information [scheduler-10] - Enterprise Edition enabled
01/07 13:44:58 Information [scheduler-10] - Starting crypto...
01/07 13:44:58 Information [scheduler-10] - Installed JSafe JCE provider: Version 3.6 RSA Security Inc. Crypto-J JCE Security Provider (implements RSA, DSA, Diffie-Hellman, AES, DES, Triple DES, DESX, RC2, RC4, RC5, PBE, MD2, MD5, RIPEMD160, SHA1, SHA224, SHA256, SHA384, SHA512, HMAC-MD5, HMAC-RIPEMD160, HMAC-SHA1, HMAC-SHA224, HMAC-SHA256, HMAC-SHA384, HMAC-SHA512)
01/07 13:44:58 Information [scheduler-10] - Starting security...
01/07 13:44:58 user failed to load: coldfusion.server.j2ee.CFStartUpServlet
01/07 13:44:58 user CFMxmlServlet: init
01/07 13:44:58 user failed to load: flex.compiler.MxmlServlet
01/07 13:44:58 user CFSwfServlet: init
01/07 13:44:58 user failed to load: flex.server.j2ee.SwfServlet
01/07 13:44:58 user failed to load: coldfusion.xml.rpc.CFCServlet
01/07 13:44:58 user failed to load: flashgateway.controller.GatewayServlet
01/07 13:44:58 user failed to load: coldfusion.flex.ColdFusionMessageBrokerServlet
01/07 13:44:58 user failed to load: flashgateway.controller.GatewayServlet
01/07 13:44:58 user CFInternalServlet: init
01/07 13:44:58 user failed to load: flex.server.j2ee.filemanager.FileManagerServlet
01/07 14:13:32 user FileServlet: init

File permissions appear ok.

The /var/log/coldfusion_errors log for startup is 47Kbytes long so I won't post it. ;)

Does anyone have any idea where to look for this problem?